Cannot save Effects presets in LogicPro X

ave you tried repairing permissions with disk utility?

Next I would try creating a new user and try that. It sounds like your user is corrupted in some way.

First of all look up the result code and see where that leads you..

Are you logging on to computer as administrator or a user?

One possibility is that you don't have permission to write in that folder.

Go the the effects preset folder, I'm not sure if it's in main library, user or both..

Log in as administrator, and make sure you (whether admin or other user has permission to

read and write to that folder.. You might have to back up a folder or two (where ever presets is nestled)

and make sure you have permission to read/write to those folders too..